package com.lingx.support.local;

import java.net.UnknownHostException;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;

import com.lingx.core.utils.IpUtils;
import com.lingx.support.local.server.Arith;
import com.lingx.support.local.server.Cpu;
import com.lingx.support.local.server.Jvm;
import com.lingx.support.local.server.Mem;
import com.lingx.support.local.server.Sys;
import com.lingx.support.local.server.SysFile;

import oshi.SystemInfo;
import oshi.hardware.CentralProcessor;
import oshi.hardware.CentralProcessor.TickType;
import oshi.hardware.GlobalMemory;
import oshi.hardware.HardwareAbstractionLayer;
import oshi.software.os.FileSystem;
import oshi.software.os.OSFileStore;
import oshi.software.os.OperatingSystem;
import oshi.util.Util;

/** 
* @author www.lingx.com
* @version 创建时间：2021年1月14日 下午3:23:07 
* 类说明 
*/
public class Server {
	  private static final int OSHI_WAIT_SECOND = 1000;
	    
	    /**
	     * CPU相关信息
	     */
	    private Cpu cpu = new Cpu();

	    /**
	     * 內存相关信息
	     */
	    private Mem mem = new Mem();

	    /**
	     * JVM相关信息
	     */
	    private Jvm jvm = new Jvm();

	    /**
	     * 服务器相关信息
	     */
	    private Sys sys = new Sys();

	    /**
	     * 磁盘相关信息
	     */
	    private List<SysFile> sysFiles = new LinkedList<SysFile>();

	    public Cpu getCpu()
	    {
	        return cpu;
	    }

	    public void setCpu(Cpu cpu)
	    {
	        this.cpu = cpu;
	    }

	    public Mem getMem()
	    {
	        return mem;
	    }

	    public void setMem(Mem mem)
	    {
	        this.mem = mem;
	    }

	    public Jvm getJvm()
	    {
	        return jvm;
	    }

	    public void setJvm(Jvm jvm)
	    {
	        this.jvm = jvm;
	    }

	    public Sys getSys()
	    {
	        return sys;
	    }

	    public void setSys(Sys sys)
	    {
	        this.sys = sys;
	    }

	    public List<SysFile> getSysFiles()
	    {
	        return sysFiles;
	    }

	    public void setSysFiles(List<SysFile> sysFiles)
	    {
	        this.sysFiles = sysFiles;
	    }

	    public void copyTo() throws Exception
	    {
	        SystemInfo si = new SystemInfo();
	        HardwareAbstractionLayer hal = si.getHardware();

	        setCpuInfo(hal.getProcessor());

	        setMemInfo(hal.getMemory());

	        setSysInfo();

	        setJvmInfo();

	        setSysFiles(si.getOperatingSystem());
	    }

	    /**
	     * 设置CPU信息
	     */
	    private void setCpuInfo(CentralProcessor processor)
	    {
	        // CPU信息
	        long[] prevTicks = processor.getSystemCpuLoadTicks();
	        Util.sleep(OSHI_WAIT_SECOND);
	        long[] ticks = processor.getSystemCpuLoadTicks();
	        long nice = ticks[TickType.NICE.getIndex()] - prevTicks[TickType.NICE.getIndex()];
	        long irq = ticks[TickType.IRQ.getIndex()] - prevTicks[TickType.IRQ.getIndex()];
	        long softirq = ticks[TickType.SOFTIRQ.getIndex()] - prevTicks[TickType.SOFTIRQ.getIndex()];
	        long steal = ticks[TickType.STEAL.getIndex()] - prevTicks[TickType.STEAL.getIndex()];
	        long cSys = ticks[TickType.SYSTEM.getIndex()] - prevTicks[TickType.SYSTEM.getIndex()];
	        long user = ticks[TickType.USER.getIndex()] - prevTicks[TickType.USER.getIndex()];
	        long iowait = ticks[TickType.IOWAIT.getIndex()] - prevTicks[TickType.IOWAIT.getIndex()];
	        long idle = ticks[TickType.IDLE.getIndex()] - prevTicks[TickType.IDLE.getIndex()];
	        long totalCpu = user + nice + cSys + idle + iowait + irq + softirq + steal;
	        cpu.setCpuNum(processor.getLogicalProcessorCount());
	        cpu.setTotal(totalCpu);
	        cpu.setSys(cSys);
	        cpu.setUsed(user);
	        cpu.setWait(iowait);
	        cpu.setFree(idle);
	    }

	    /**
	     * 设置内存信息
	     */
	    private void setMemInfo(GlobalMemory memory)
	    {
	        mem.setTotal(memory.getTotal());
	        mem.setUsed(memory.getTotal() - memory.getAvailable());
	        mem.setFree(memory.getAvailable());
	    }

	    /**
	     * 设置服务器信息
	     */
	    private void setSysInfo()
	    {
	        Properties props = System.getProperties();
	        sys.setComputerName(IpUtils.getHostName());
	        sys.setComputerIp(IpUtils.getHostIp());
	        sys.setOsName(props.getProperty("os.name"));
	        sys.setOsArch(props.getProperty("os.arch"));
	        sys.setUserDir(props.getProperty("user.dir"));
	    }

	    /**
	     * 设置Java虚拟机
	     */
	    private void setJvmInfo() throws UnknownHostException
	    {
	        Properties props = System.getProperties();
	        jvm.setTotal(Runtime.getRuntime().totalMemory());
	        jvm.setMax(Runtime.getRuntime().maxMemory());
	        jvm.setFree(Runtime.getRuntime().freeMemory());
	        jvm.setVersion(props.getProperty("java.version"));
	        jvm.setHome(props.getProperty("java.home"));
	    }

	    /**
	     * 设置磁盘信息
	     */
	    private void setSysFiles(OperatingSystem os)
	    {
	        FileSystem fileSystem = os.getFileSystem();
	        List<OSFileStore> fsArray = fileSystem.getFileStores();
	        for (OSFileStore fs : fsArray)
	        {
	            long free = fs.getUsableSpace();
	            long total = fs.getTotalSpace();
	            long used = total - free;
	            SysFile sysFile = new SysFile();
	            sysFile.setDirName(fs.getMount());
	            sysFile.setSysTypeName(fs.getType());
	            sysFile.setTypeName(fs.getName());
	            sysFile.setTotal(convertFileSize(total));
	            sysFile.setFree(convertFileSize(free));
	            sysFile.setUsed(convertFileSize(used));
	            sysFile.setUsage(Arith.mul(Arith.div(used, total, 4), 100));
	            sysFiles.add(sysFile);
	        }
	    }

	    /**
	     * 字节转换
	     * 
	     * @param size 字节大小
	     * @return 转换后值
	     */
	    public String convertFileSize(long size)
	    {
	        long kb = 1024;
	        long mb = kb * 1024;
	        long gb = mb * 1024;
	        if (size >= gb)
	        {
	            return String.format("%.1f GB", (float) size / gb);
	        }
	        else if (size >= mb)
	        {
	            float f = (float) size / mb;
	            return String.format(f > 100 ? "%.0f MB" : "%.1f MB", f);
	        }
	        else if (size >= kb)
	        {
	            float f = (float) size / kb;
	            return String.format(f > 100 ? "%.0f KB" : "%.1f KB", f);
	        }
	        else
	        {
	            return String.format("%d B", size);
	        }
	    }
}
